What is "phialide"

n. A flask-shaped projection from the vesicle of certain fungus.

The phialide (; , diminutive of phiale, a broad, flat vessel) is a flask-shaped projection from the vesicle (dilated part of the top of conidiophore) of certain fungi. It projects from the mycelium without increasing in length unless a subsequent increase in the formation of conidia occurs.

It is the end cell of a phialophore.